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Follow review comments (optimize the filtering)
This commit is contained in:
parent
edc6577627
commit
71b4d108c7
@ -972,7 +972,7 @@ fn analysis(tcx: TyCtxt<'_>, (): ()) -> Result<()> {
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tcx.ensure().check_mod_privacy(module);
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});
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});
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}
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} // { sess.time("mir_checking", || { tcx.hir().mir_for }) }
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);
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// This check has to be run after all lints are done processing. We don't
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@ -20,6 +20,7 @@
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//! If you define a new `LateLintPass`, you will also need to add it to the
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//! `late_lint_methods!` invocation in `lib.rs`.
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use std::default::Default;
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use std::fmt::Write;
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use ast::token::TokenKind;
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@ -73,12 +74,10 @@ use crate::{
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EarlyContext, EarlyLintPass, LateContext, LateLintPass, Level, LintContext,
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fluent_generated as fluent,
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};
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use std::default::Default;
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use std::fmt::Write;
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// use std::fmt::Write;
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// hardwired lints from rustc_lint_defs
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pub use rustc_session::lint::builtin::*;
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// pub use rustc_session::lint::builtin::*;
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declare_lint! {
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/// The `while_true` lint detects `while true { }`.
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@ -24,13 +24,12 @@ use rustc_hir::def_id::{LocalDefId, LocalModDefId};
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use rustc_hir::{HirId, intravisit as hir_visit};
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use rustc_middle::hir::nested_filter;
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use rustc_middle::ty::{self, TyCtxt};
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use rustc_session::Session;
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use rustc_session::lint::LintPass;
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use rustc_session::{Session, lint::{LintPass, builtin::HardwiredLints}};
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use rustc_span::Span;
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use tracing::debug;
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use crate::passes::LateLintPassObject;
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use crate::{LateContext, LateLintPass, LintStore};
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use crate::{LateContext, LateLintPass, LintId, LintStore};
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/// Extract the [`LintStore`] from [`Session`].
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///
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@ -371,29 +370,24 @@ pub fn late_lint_mod<'tcx, T: LateLintPass<'tcx> + 'tcx>(
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} else {
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let passes: Vec<_> =
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store.late_module_passes.iter().map(|mk_pass| (mk_pass)(tcx)).collect();
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// Filter unused lints
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let (lints_that_actually_run, lints_allowed) = &**tcx.lints_that_can_emit(());
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// let lints_that_actually_run = &lints_that_can_emit.0;
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// let lints_allowed = &lints_that_can_emit.1;
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// Now, we'll filtered passes in a way that discards any lint that won't trigger.
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// If any lint is a given pass is detected to be emitted, we will keep that pass.
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// Otherwise, we don't
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let lints_that_dont_need_to_run = tcx.lints_that_dont_need_to_run(());
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let mut filtered_passes: Vec<Box<dyn LateLintPass<'tcx>>> = passes
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.into_iter()
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.filter(|pass| {
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let pass = LintPass::get_lints(pass);
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pass.iter().any(|&lint| {
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let lint_name = name_without_tool(&lint.name.to_lowercase()).to_string();
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lints_that_actually_run.contains(&lint_name)
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|| (!lints_allowed.contains(&lint_name)
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&& lint.default_level != crate::Level::Allow)
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})
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let lints = LintPass::get_lints(pass);
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if lints.is_empty() {
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true
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} else {
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lints
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.iter()
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.any(|lint| !lints_that_dont_need_to_run.contains(&LintId::of(lint)))
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}
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})
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.collect();
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filtered_passes.push(Box::new(builtin_lints));
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filtered_passes.push(Box::new(HardwiredLints));
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let pass = RuntimeCombinedLateLintPass { passes: &mut filtered_passes[..] };
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late_lint_mod_inner(tcx, module_def_id, context, pass);
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@ -426,7 +420,7 @@ fn late_lint_mod_inner<'tcx, T: LateLintPass<'tcx>>(
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fn late_lint_crate<'tcx>(tcx: TyCtxt<'tcx>) {
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// Note: `passes` is often empty.
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let mut passes: Vec<_> =
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let passes: Vec<_> =
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unerased_lint_store(tcx.sess).late_passes.iter().map(|mk_pass| (mk_pass)(tcx)).collect();
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if passes.is_empty() {
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@ -444,7 +438,30 @@ fn late_lint_crate<'tcx>(tcx: TyCtxt<'tcx>) {
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only_module: false,
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};
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let pass = RuntimeCombinedLateLintPass { passes: &mut passes[..] };
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let lints_that_dont_need_to_run = tcx.lints_that_dont_need_to_run(());
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// dbg!(&lints_that_dont_need_to_run);
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let mut filtered_passes: Vec<Box<dyn LateLintPass<'tcx>>> = passes
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.into_iter()
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.filter(|pass| {
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let lints = LintPass::get_lints(pass);
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!lints.iter().all(|lint| lints_that_dont_need_to_run.contains(&LintId::of(lint)))
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})
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.collect();
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filtered_passes.push(Box::new(HardwiredLints));
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// let mut filtered_passes: Vec<Box<dyn LateLintPass<'tcx>>> = passes
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// .into_iter()
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// .filter(|pass| {
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// let lints = LintPass::get_lints(pass);
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// lints.iter()
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// .any(|lint|
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// !lints_that_dont_need_to_run.contains(&LintId::of(lint)))
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// }).collect();
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//
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let pass = RuntimeCombinedLateLintPass { passes: &mut filtered_passes[..] };
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late_lint_crate_inner(tcx, context, pass);
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}
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@ -482,10 +499,3 @@ pub fn check_crate<'tcx>(tcx: TyCtxt<'tcx>) {
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},
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);
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}
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/// Format name ignoring the name, useful for filtering non-used lints.
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/// For example, 'clippy::my_lint' will turn into 'my_lint'
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pub(crate) fn name_without_tool(name: &str) -> &str {
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// Doing some calculations here to account for those separators
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name.rsplit("::").next().unwrap_or(name)
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}
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@ -1,5 +1,5 @@
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use rustc_ast_pretty::pprust;
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use rustc_data_structures::{fx::FxIndexMap, fx::FxIndexSet, sync::Lrc};
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use rustc_data_structures::fx::{FxIndexMap, FxIndexSet};
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use rustc_errors::{Diag, LintDiagnostic, MultiSpan};
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use rustc_feature::{Features, GateIssue};
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use rustc_hir::HirId;
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@ -31,7 +31,7 @@ use crate::errors::{
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OverruledAttributeSub, RequestedLevel, UnknownToolInScopedLint, UnsupportedGroup,
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};
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use crate::fluent_generated as fluent;
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use crate::late::{unerased_lint_store, name_without_tool};
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use crate::late::{unerased_lint_store /*name_without_tool*/};
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use crate::lints::{
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DeprecatedLintName, DeprecatedLintNameFromCommandLine, IgnoredUnlessCrateSpecified,
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OverruledAttributeLint, RemovedLint, RemovedLintFromCommandLine, RenamedLint,
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@ -115,34 +115,41 @@ impl LintLevelSets {
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}
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}
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/// Walk the whole crate collecting nodes where lint levels change
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/// (e.g. `#[allow]` attributes), and joins that list with the warn-by-default
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/// (and not allowed in the crate) and CLI lints. The returned value is a tuple
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/// of 1. The lints that will emit (or at least, should run), and 2.
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/// The lints that are allowed at the crate level and will not emit.
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pub fn lints_that_can_emit(tcx: TyCtxt<'_>, (): ()) -> Lrc<(FxIndexSet<String>, FxIndexSet<String>)> {
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let mut visitor = LintLevelMinimum::new(tcx);
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fn lints_that_dont_need_to_run(tcx: TyCtxt<'_>, (): ()) -> FxIndexSet<LintId> {
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let store = unerased_lint_store(&tcx.sess);
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let dont_need_to_run: FxIndexSet<LintId> = store
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.get_lints()
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.into_iter()
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.filter_map(|lint| {
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if !lint.loadbearing && lint.default_level(tcx.sess.edition()) == Level::Allow {
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Some(LintId::of(lint))
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} else {
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None
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}
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})
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.collect();
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let mut visitor = LintLevelMaximum { tcx, dont_need_to_run };
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visitor.process_opts();
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tcx.hir().walk_attributes(&mut visitor);
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let store = unerased_lint_store(&tcx.sess);
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// let lint_groups = store.get_lint_groups();
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// for group in lint_groups {
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// let binding = group.0.to_lowercase();
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// let group_name = name_without_tool(&binding).to_string();
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// if visitor.lints_that_actually_run.contains(&group_name) {
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// for lint in group.1 {
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// visitor.lints_that_actually_run.insert(name_without_tool(&lint.to_string()).to_string());
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// }
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// } else if visitor.lints_allowed.contains(&group_name) {
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// for lint in &group.1 {
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// visitor.lints_allowed.insert(name_without_tool(&lint.to_string()).to_string());
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// }
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// }
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// }
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let lint_groups = store.get_lint_groups();
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for group in lint_groups {
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let binding = group.0.to_lowercase();
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let group_name = name_without_tool(&binding).to_string();
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if visitor.lints_that_actually_run.contains(&group_name) {
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for lint in group.1 {
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visitor.lints_that_actually_run.insert(name_without_tool(&lint.to_string()).to_string());
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}
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} else if visitor.lints_allowed.contains(&group_name) {
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for lint in &group.1 {
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visitor.lints_allowed.insert(name_without_tool(&lint.to_string()).to_string());
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}
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}
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}
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Lrc::new((visitor.lints_that_actually_run, visitor.lints_allowed))
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visitor.dont_need_to_run
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}
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#[instrument(level = "trace", skip(tcx), ret)]
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@ -336,39 +343,29 @@ impl<'tcx> Visitor<'tcx> for LintLevelsBuilder<'_, LintLevelQueryMap<'tcx>> {
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///
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/// E.g., if a crate has a global #![allow(lint)] attribute, but a single item
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/// uses #[warn(lint)], this visitor will set that lint level as `Warn`
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struct LintLevelMinimum<'tcx> {
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struct LintLevelMaximum<'tcx> {
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tcx: TyCtxt<'tcx>,
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/// The actual list of detected lints.
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lints_that_actually_run: FxIndexSet<String>,
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lints_allowed: FxIndexSet<String>,
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}
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impl<'tcx> LintLevelMinimum<'tcx> {
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pub fn new(tcx: TyCtxt<'tcx>) -> Self {
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let mut lints_that_actually_run = FxIndexSet::default();
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lints_that_actually_run.reserve(230);
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let mut lints_allowed = FxIndexSet::default();
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lints_allowed.reserve(100);
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Self {
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tcx,
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// That magic number is the current number of lints + some more for possible future lints
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lints_that_actually_run,
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lints_allowed,
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}
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dont_need_to_run: FxIndexSet<LintId>,
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}
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impl<'tcx> LintLevelMaximum<'tcx> {
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fn process_opts(&mut self) {
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for (lint, level) in &self.tcx.sess.opts.lint_opts {
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if *level == Level::Allow {
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self.lints_allowed.insert(lint.clone());
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} else {
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self.lints_that_actually_run.insert(lint.to_string());
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let store = unerased_lint_store(self.tcx.sess);
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for (lint_group, level) in &self.tcx.sess.opts.lint_opts {
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if *level != Level::Allow {
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let Ok(lints) = store.find_lints(lint_group) else {
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return;
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};
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for lint in lints {
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self.dont_need_to_run.swap_remove(&lint);
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}
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}
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}
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}
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}
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impl<'tcx> Visitor<'tcx> for LintLevelMinimum<'tcx> {
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impl<'tcx> Visitor<'tcx> for LintLevelMaximum<'tcx> {
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type NestedFilter = nested_filter::All;
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fn nested_visit_map(&mut self) -> Self::Map {
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@ -376,42 +373,82 @@ impl<'tcx> Visitor<'tcx> for LintLevelMinimum<'tcx> {
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}
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fn visit_attribute(&mut self, attribute: &'tcx ast::Attribute) {
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if let Some(meta) = attribute.meta() {
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if [sym::warn, sym::deny, sym::forbid, sym::expect]
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.iter()
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.any(|kind| meta.has_name(*kind))
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{
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match Level::from_attr(attribute) {
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Some(
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Level::Warn
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| Level::Deny
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| Level::Forbid
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| Level::Expect(..)
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| Level::ForceWarn(..),
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) => {
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let store = unerased_lint_store(self.tcx.sess);
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let Some(meta) = attribute.meta() else { return };
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// SAFETY: Lint attributes are always a metalist inside a
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// metalist (even with just one lint).
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for meta_list in meta.meta_item_list().unwrap() {
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// If it's a tool lint (e.g. clippy::my_clippy_lint)
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if let ast::NestedMetaItem::MetaItem(meta_item) = meta_list {
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if meta_item.path.segments.len() == 1 {
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self.lints_that_actually_run.insert(
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let Some(meta_item_list) = meta.meta_item_list() else { return };
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for meta_list in meta_item_list {
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// Convert Path to String
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let Some(meta_item) = meta_list.meta_item() else { return };
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let ident: &str = &meta_item
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.path
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.segments
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.iter()
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.map(|segment| segment.ident.as_str())
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.collect::<Vec<&str>>()
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.join("::");
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let Ok(lints) = store.find_lints(
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// SAFETY: Lint attributes can only have literals
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meta_list.ident().unwrap().name.as_str().to_string(),
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);
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} else {
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self.lints_that_actually_run
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.insert(meta_item.path.segments[1].ident.name.as_str().to_string());
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}
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ident,
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) else {
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return;
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};
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for lint in lints {
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self.dont_need_to_run.swap_remove(&lint);
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}
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// // If it's a tool lint (e.g. clippy::my_clippy_lint)
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// if let ast::NestedMetaItem::MetaItem(meta_item) = meta_list {
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// if meta_item.path.segments.len() == 1 {
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// let Ok(lints) = store.find_lints(
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// // SAFETY: Lint attributes can only have literals
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// meta_list.ident().unwrap().name.as_str(),
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// ) else {
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// return;
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// };
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// for lint in lints {
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// dbg!("LINT REMOVED", &lint);
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// self.dont_need_to_run.swap_remove(&lint);
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// }
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// } else {
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// let Ok(lints) = store.find_lints(
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// // SAFETY: Lint attributes can only have literals
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// meta_item.path.segments[1].ident.name.as_str(),
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// ) else {
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// return;
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// };
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// for lint in lints {
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// dbg!("LINT REMOVED", &lint);
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// self.dont_need_to_run.swap_remove(&lint);
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// }
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// }
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}
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// We handle #![allow]s differently, as these remove checking rather than adding.
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} else if meta.has_name(sym::allow)
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&& let ast::AttrStyle::Inner = attribute.style
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{
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for meta_list in meta.meta_item_list().unwrap() {
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// If it's a tool lint (e.g. clippy::my_clippy_lint)
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if let ast::NestedMetaItem::MetaItem(meta_item) = meta_list {
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if meta_item.path.segments.len() == 1 {
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self.lints_allowed.insert(meta_list.name_or_empty().as_str().to_string());
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} else {
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self.lints_allowed
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.insert(meta_item.path.segments[1].ident.name.as_str().to_string());
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}
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}
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}
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} // Some(Level::Allow) if ast::AttrStyle::Inner == attribute.style => {
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// for meta_list in meta.meta_item_list().unwrap() {
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// // If it's a tool lint (e.g. clippy::my_clippy_lint)
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// if let ast::NestedMetaItem::MetaItem(meta_item) = meta_list {
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// if meta_item.path.segments.len() == 1 {
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// self.lints_allowed
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// .insert(meta_list.name_or_empty().as_str().to_string());
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// } else {
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// self.lints_allowed
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// .insert(meta_item.path.segments[1].ident.name.as_str().to_string());
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// }
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// }
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// }
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// }
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_ => {
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return;
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}
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}
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}
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@ -1047,8 +1084,7 @@ impl<'s, P: LintLevelsProvider> LintLevelsBuilder<'s, P> {
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}
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pub(crate) fn provide(providers: &mut Providers) {
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*providers =
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Providers { shallow_lint_levels_on, lints_that_can_emit, ..*providers };
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*providers = Providers { shallow_lint_levels_on, lints_that_dont_need_to_run, ..*providers };
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}
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pub(crate) fn parse_lint_and_tool_name(lint_name: &str) -> (Option<Symbol>, &str) {
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|
@ -199,7 +199,6 @@ late_lint_methods!(
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ForLoopsOverFallibles: ForLoopsOverFallibles,
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DerefIntoDynSupertrait: DerefIntoDynSupertrait,
|
||||
DropForgetUseless: DropForgetUseless,
|
||||
HardwiredLints: HardwiredLints,
|
||||
ImproperCTypesDeclarations: ImproperCTypesDeclarations,
|
||||
ImproperCTypesDefinitions: ImproperCTypesDefinitions,
|
||||
InvalidFromUtf8: InvalidFromUtf8,
|
||||
@ -280,6 +279,7 @@ fn register_builtins(store: &mut LintStore) {
|
||||
store.register_lints(&BuiltinCombinedEarlyLintPass::get_lints());
|
||||
store.register_lints(&BuiltinCombinedModuleLateLintPass::get_lints());
|
||||
store.register_lints(&foreign_modules::get_lints());
|
||||
store.register_lints(&HardwiredLints::default().get_lints());
|
||||
|
||||
add_lint_group!(
|
||||
"nonstandard_style",
|
||||
|
@ -70,7 +70,18 @@ macro_rules! declare_late_lint_pass {
|
||||
// for all the `check_*` methods.
|
||||
late_lint_methods!(declare_late_lint_pass, []);
|
||||
|
||||
impl LateLintPass<'_> for HardwiredLints {}
|
||||
impl LateLintPass<'_> for HardwiredLints {
|
||||
fn check_fn(
|
||||
&mut self,
|
||||
_: &LateContext<'_>,
|
||||
_: rustc_hir::intravisit::FnKind<'_>,
|
||||
_: &'_ rustc_hir::FnDecl<'_>,
|
||||
_: &'_ rustc_hir::Body<'_>,
|
||||
_: rustc_span::Span,
|
||||
_: rustc_span::def_id::LocalDefId,
|
||||
) {
|
||||
}
|
||||
}
|
||||
|
||||
#[macro_export]
|
||||
macro_rules! expand_combined_late_lint_pass_method {
|
||||
|
@ -1026,7 +1026,7 @@ pub(crate) struct UnusedParens {
|
||||
}
|
||||
|
||||
impl Default for UnusedParens {
|
||||
fpub(crate) fn default() -> Self {
|
||||
fn default() -> Self {
|
||||
Self { with_self_ty_parens: false, parens_in_cast_in_lt: Vec::new() }
|
||||
}
|
||||
}
|
||||
|
@ -12,8 +12,6 @@ use rustc_span::edition::Edition;
|
||||
use crate::{FutureIncompatibilityReason, declare_lint, declare_lint_pass};
|
||||
|
||||
declare_lint_pass! {
|
||||
/// Does nothing as a lint pass, but registers some `Lint`s
|
||||
/// that are used by other parts of the compiler.
|
||||
HardwiredLints => [
|
||||
// tidy-alphabetical-start
|
||||
ABSOLUTE_PATHS_NOT_STARTING_WITH_CRATE,
|
||||
@ -403,7 +401,8 @@ declare_lint! {
|
||||
/// `panic!` or `unreachable!` macro instead in case the panic is intended.
|
||||
pub UNCONDITIONAL_PANIC,
|
||||
Deny,
|
||||
"operation will cause a panic at runtime"
|
||||
"operation will cause a panic at runtime",
|
||||
[loadbearing: true]
|
||||
}
|
||||
|
||||
declare_lint! {
|
||||
|
@ -29,6 +29,7 @@ use rustc_hir::def_id::{
|
||||
use rustc_hir::lang_items::{LangItem, LanguageItems};
|
||||
use rustc_hir::{Crate, ItemLocalId, ItemLocalMap, TraitCandidate};
|
||||
use rustc_index::IndexVec;
|
||||
use rustc_lint_defs::LintId;
|
||||
use rustc_macros::rustc_queries;
|
||||
use rustc_query_system::ich::StableHashingContext;
|
||||
use rustc_query_system::query::{QueryCache, QueryMode, QueryState, try_get_cached};
|
||||
@ -422,7 +423,7 @@ rustc_queries! {
|
||||
desc { "computing `#[expect]`ed lints in this crate" }
|
||||
}
|
||||
|
||||
query lints_that_can_emit(_: ()) -> &'tcx Lrc<(FxIndexSet<String>, FxIndexSet<String>)> {
|
||||
query lints_that_dont_need_to_run(_: ()) -> &'tcx FxIndexSet<LintId> {
|
||||
arena_cache
|
||||
desc { "Computing all lints that are explicitly enabled or with a default level greater than Allow" }
|
||||
}
|
||||
|
@ -187,6 +187,7 @@ pub struct Session {
|
||||
/// errors.
|
||||
pub ctfe_backtrace: Lock<CtfeBacktrace>,
|
||||
|
||||
// pub force_ctfe: bool,
|
||||
/// This tracks where `-Zunleash-the-miri-inside-of-you` was used to get around a
|
||||
/// const check, optionally with the relevant feature gate. We use this to
|
||||
/// warn about unleashing, but with a single diagnostic instead of dozens that
|
||||
|
@ -3,7 +3,7 @@ use std::fmt;
|
||||
use clippy_utils::diagnostics::span_lint_and_then;
|
||||
use rustc_ast::ast::{Expr, ExprKind, InlineAsmOptions};
|
||||
use rustc_ast::{InlineAsm, Item, ItemKind};
|
||||
use rustc_lint::{EarlyContext, EarlyLintPass, Lint, LintPass, LintContext};
|
||||
use rustc_lint::{EarlyContext, EarlyLintPass, Lint, LintContext};
|
||||
use rustc_session::declare_lint_pass;
|
||||
use rustc_span::Span;
|
||||
use rustc_target::asm::InlineAsmArch;
|
||||
|
@ -8,30 +8,44 @@ use core::ops::ControlFlow;
|
||||
use rustc_ast::ast::Attribute;
|
||||
use rustc_hir::intravisit::FnKind;
|
||||
use rustc_hir::{Body, Expr, ExprKind, FnDecl};
|
||||
use rustc_lint::{LateContext, LateLintPass, LintContext};
|
||||
use rustc_lint::Level::Allow;
|
||||
use rustc_lint::{LateContext, LateLintPass, Lint, LintContext};
|
||||
use rustc_session::impl_lint_pass;
|
||||
use rustc_span::def_id::LocalDefId;
|
||||
use rustc_span::{Span, sym};
|
||||
|
||||
declare_clippy_lint! {
|
||||
/// ### What it does
|
||||
/// Checks for methods with high cognitive complexity.
|
||||
///
|
||||
/// ### Why is this bad?
|
||||
/// Methods of high cognitive complexity tend to be hard to
|
||||
/// both read and maintain. Also LLVM will tend to optimize small methods better.
|
||||
///
|
||||
/// ### Known problems
|
||||
/// Sometimes it's hard to find a way to reduce the
|
||||
/// complexity.
|
||||
///
|
||||
/// ### Example
|
||||
/// You'll see it when you get the warning.
|
||||
#[clippy::version = "1.35.0"]
|
||||
pub COGNITIVE_COMPLEXITY,
|
||||
nursery,
|
||||
"functions that should be split up into multiple functions"
|
||||
}
|
||||
use crate::LintInfo;
|
||||
|
||||
pub static COGNITIVE_COMPLEXITY: &Lint = &Lint {
|
||||
name: &"clippy::COGNITIVE_COMPLEXITY",
|
||||
default_level: Allow,
|
||||
desc: "functions that should be split up into multiple functions",
|
||||
edition_lint_opts: None,
|
||||
report_in_external_macro: true,
|
||||
future_incompatible: None,
|
||||
is_externally_loaded: true,
|
||||
crate_level_only: false,
|
||||
loadbearing: true,
|
||||
..Lint::default_fields_for_macro()
|
||||
};
|
||||
pub(crate) static COGNITIVE_COMPLEXITY_INFO: &'static LintInfo = &LintInfo {
|
||||
lint: &COGNITIVE_COMPLEXITY,
|
||||
category: crate::LintCategory::Nursery,
|
||||
explanation: r"### What it does
|
||||
Checks for methods with high cognitive complexity.
|
||||
|
||||
### Why is this bad?
|
||||
Methods of high cognitive complexity tend to be hard to both read and maintain.
|
||||
Also LLVM will tend to optimize small methods better.
|
||||
|
||||
### Known problems
|
||||
Sometimes it's hard to find a way to reduce the complexity.
|
||||
|
||||
### Example
|
||||
You'll see it when you get the warning.",
|
||||
version: Some("1.35.0"),
|
||||
location: "#L0",
|
||||
};
|
||||
|
||||
pub struct CognitiveComplexity {
|
||||
limit: LimitStack,
|
||||
|
54
src/tools/clippy/clippy_lints/src/ctfe.rs
Normal file
54
src/tools/clippy/clippy_lints/src/ctfe.rs
Normal file
@ -0,0 +1,54 @@
|
||||
use rustc_hir::def_id::LocalDefId;
|
||||
use rustc_hir::intravisit::FnKind;
|
||||
use rustc_hir::{Body, FnDecl};
|
||||
use rustc_lint::{LateContext, LateLintPass};
|
||||
use rustc_session::declare_lint_pass;
|
||||
use rustc_span::Span;
|
||||
|
||||
declare_clippy_lint! {
|
||||
/// ### What it does
|
||||
/// Checks for comparisons where one side of the relation is
|
||||
/// either the minimum or maximum value for its type and warns if it involves a
|
||||
/// case that is always true or always false. Only integer and boolean types are
|
||||
/// checked.
|
||||
///
|
||||
/// ### Why is this bad?
|
||||
/// An expression like `min <= x` may misleadingly imply
|
||||
/// that it is possible for `x` to be less than the minimum. Expressions like
|
||||
/// `max < x` are probably mistakes.
|
||||
///
|
||||
/// ### Known problems
|
||||
/// For `usize` the size of the current compile target will
|
||||
/// be assumed (e.g., 64 bits on 64 bit systems). This means code that uses such
|
||||
/// a comparison to detect target pointer width will trigger this lint. One can
|
||||
/// use `mem::sizeof` and compare its value or conditional compilation
|
||||
/// attributes
|
||||
/// like `#[cfg(target_pointer_width = "64")] ..` instead.
|
||||
///
|
||||
/// ### Example
|
||||
/// ```no_run
|
||||
/// let vec: Vec<isize> = Vec::new();
|
||||
/// if vec.len() <= 0 {}
|
||||
/// if 100 > i32::MAX {}
|
||||
/// ```
|
||||
#[clippy::version = "1.82.0"]
|
||||
pub CLIPPY_CTFE,
|
||||
correctness,
|
||||
"a comparison with a maximum or minimum value that is always true or false"
|
||||
}
|
||||
|
||||
declare_lint_pass! { ClippyCtfe => [CLIPPY_CTFE] }
|
||||
|
||||
impl<'tcx> LateLintPass<'tcx> for ClippyCtfe {
|
||||
fn check_fn(
|
||||
&mut self,
|
||||
cx: &LateContext<'_>,
|
||||
_: FnKind<'tcx>,
|
||||
_: &'tcx FnDecl<'tcx>,
|
||||
_: &'tcx Body<'tcx>,
|
||||
_: Span,
|
||||
defid: LocalDefId,
|
||||
) {
|
||||
cx.tcx.ensure().mir_drops_elaborated_and_const_checked(defid); // Lint
|
||||
}
|
||||
}
|
@ -65,6 +65,7 @@ extern crate clippy_utils;
|
||||
#[cfg_attr(feature = "internal", allow(clippy::missing_clippy_version_attribute))]
|
||||
mod utils;
|
||||
|
||||
pub mod ctfe; // VERY important lint (rust#125116)
|
||||
pub mod declared_lints;
|
||||
pub mod deprecated_lints;
|
||||
|
||||
@ -605,6 +606,8 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) {
|
||||
});
|
||||
}
|
||||
|
||||
store.register_late_pass(|_| Box::new(ctfe::ClippyCtfe));
|
||||
|
||||
store.register_late_pass(move |_| Box::new(operators::arithmetic_side_effects::ArithmeticSideEffects::new(conf)));
|
||||
store.register_late_pass(|_| Box::new(utils::dump_hir::DumpHir));
|
||||
store.register_late_pass(|_| Box::new(utils::author::Author));
|
||||
|
@ -12,7 +12,7 @@ use rustc_span::symbol::{Ident, Symbol};
|
||||
use std::cell::Cell;
|
||||
use std::fmt::{Display, Formatter, Write as _};
|
||||
|
||||
declare_clippy_lint!{
|
||||
declare_lint_pass!(
|
||||
/// ### What it does
|
||||
/// Generates clippy code that detects the offending pattern
|
||||
///
|
||||
@ -44,13 +44,8 @@ declare_clippy_lint!{
|
||||
/// // report your lint here
|
||||
/// }
|
||||
/// ```
|
||||
#[clippy::version = "1.0.0"]
|
||||
pub AUTHOR,
|
||||
internal,
|
||||
"The author lint, see documentation at <https://doc.rust-lang.org/nightly/clippy/development/adding_lints.html#author-lint>"
|
||||
};
|
||||
|
||||
declare_lint_pass! { Author => [AUTHOR] }
|
||||
Author => []
|
||||
);
|
||||
|
||||
/// Writes a line of output with indentation added
|
||||
macro_rules! out {
|
||||
@ -803,3 +798,4 @@ fn path_to_string(path: &QPath<'_>) -> Result<String, ()> {
|
||||
inner(&mut s, path)?;
|
||||
Ok(s)
|
||||
}
|
||||
|
@ -1,3 +1,4 @@
|
||||
pub mod author;
|
||||
pub mod dump_hir;
|
||||
pub mod format_args_collector;
|
||||
#[cfg(feature = "internal")]
|
||||
|
Loading…
Reference in New Issue
Block a user